Change oil with Fluid Evacuator

[HTSS_TR]

Last night I changed oil in '04 Honda S2000 with Mityvac Fluid Evacuator Plus model MV7201. I checked the oil level the day before, it was full and the sump is 5.2 quarts.

The Mityvac could suck out only 5.0-5.1 quarts because it is hard to feel the bottom of the oil pan with plastic tube. The car also has Fram Sure-Drain, so that I tried it to see how more oil can be drained via Sure-Drain. Without raising the front driver side, about 5-6 ounces was drained after 10 minutes. Raising the front driver side with OE jack (drain bolt is on passenger side that can be reached from the top), another 3-4 ounces was drained after 15-20 minutes.

I then removed the oil filter, another 10-12 ounces of oil was drained from oil filter and from filter mounting hole. But there was some oil left in the filter itself, my guess is about 5-6 ounces.

Conclusion, changing oil+filter for S2000 using oil extractor can leave up to 9-10 ounces old oil in the engine compares with drain oil from drain bolt. Change oil without changing filter (specially without removing filter) even using drain bolt can leave as much as 1/3 to 1/2 quarts old oil in the engine. This doesn't count old oil in various parts of engine that can not be removed by any mean other than tear down the engine.

Honda S2000 is very easy to change oil+filter because both drain bolt and filter can be reached from the top, with Fram Sure-Drain installed it can be done without jack up the car.

 

[LoneRanger]

Has to better than the Pela 6000. I just got a Pela few weeks ago, and its pretty cheaply made. Doesn't really seem a quality piece.

 

[GROUCHO MARX]

Good info.

 

[Steve S]

The oil left doesn't matter, what matters is that the oil gets changed before it needs to be changed. I get a kick reading all the schemes people do to try to get the last drop out and probably do more damage when thinking they are doing good.

 

[hillclimber]

I'm lost. If your sump holds 5.2 quarts and the MityVac extracted "5.0-5.1" then where did the rest come from?

 

[LoneRanger]

Originally Posted By: Steve S
The oil left doesn't matter, what matters is that the oil gets changed before it needs to be changed. I get a kick reading all the schemes people do to try to get the last drop out and probably do more damage when thinking they are doing good.


I will continue to do gravity draining by removing the plug. I got the Pela primarily because the wife's VW TDI has this design to the cartridge filter canister that lets about an inch deep of oil pool in the bottom, that the only way to get it out is a fluid puller. Its hard to stick that new filter in with that pool of dirty diesel oil sitting there looking at me. And on my new Subaru, the drain plug is mounted approximately one inch above the floor of the oil pan, which it would stand to reason that dirty oil pools there, too. Enter the fluid puller again.

Yes, its probably being too meticulous. But that's me.

 

[INDYMAC]

It's been awhile, but I believe the AP2 (owners manual) calls for 5.9 quarts to fill a dry engine, and 5.1 qts for a oil and filter change on an engine that's been operated. So your results seem to be plausible. If you ever take the valve cover off, you will see little pockets of oil sitting everywhere around the valvetrain. The oil filters are tough to drain because of the ADBV.

How do you like the Mityvac? I've been thinking about getting one of these type of fluid extractors. The shop I take my vehicles to uses something similar to change PS fluid, brake fluid, clutch fluid, take care of ATF overfills, and bleed clutches (absolutely the best way for the S2000).

 

[Quattro Pete]

Using Mityvac on my 530i has been fantastic. It sucks out all the oil. On the other hand, using it on the 2.0 Jetta... I'm not convinced. It seems like about 0.3-0.5 quarts was still left behind, but I didn't unscrew the drain plug to confirm. Maybe next time...

 

[jhMalibu]

I was using a mityvac on my ecotec2.2, but then decided to install a fram sure drain. During my last oil change, I extracted like I normally do, but then opened the drain. I was very disappointed at the amount that came out. It was at least half a quart and probably closer to a full quart. The car was on level ground.

So now, I will drain via the sure drain. I feel kind of let down by my MityVac.

 

[HTSS_TR]

MityVac is an excellent tool to extract oil for newer BMW's and MB's, because the dipstick tubes in those cars were designed to use vacuum tools to extract oil. Someone on MB board tried to remove the drain bolt after using Mityvac and found no oil comming out from drain bolt.

I could not put the suction tube pass the point where it touch the bottom of oil pan in MB E430. But the suction tube was easily push more into engines of S2000 and LS400, I could not feel where was the bottom of the oil pan. That why I could not suck all oil out.

Re-checking the markings on MityVac, the actual amount suck out was about 4.7-4.8 quarts. The amount of oil drain from Sure-Drain and from filter was about 0.4-0.5 quarts. Most of the un-drained oil by MityVac was in oil filter and oil filter mounting hole.

I had Harbor Freight fluid extractor in a can and this MityVac. My brother-in-law had been using this MityVac for more than 4 years in various cars, he has BMW and MB, we both like MityVac much better than the other. The cost is about $60-70, and it saves a lot of $ compares with taking these BMW and MB dealers for oil changes. It's very obvious to me that if you need/want a fluid extractor, MityVac is the best for $.